Hybrid powertrain and vehicle

The application is a continuation application of International Patent Application No. PCT/CN2022/135495 filed on Nov. 30, 2022, which is based on and claims priority to and benefits of Chinese patent application No. 202122971218.X filed on Nov. 30, 2021, and 202210613740.7 filed on May 31, 2022. The entire content of all of the above-referenced applications is incorporated herein by reference.

The present disclosure relates to the field of vehicles, and in particular, to a hybrid powertrain and a vehicle.

In related technologies, the hybrid powertrain of related vehicles has a complex structure, is inconvenient to be arranged and installed on the vehicles, and occupies a large space.

The present disclosure is to resolve at least one of the technical problems existing in related arts. Therefore, the present disclosure provides a hybrid powertrain, and the hybrid powertrain has a simple and compact structure, so that a vehicle can switch between different driving modes, and driving performance of the vehicle is improved.

The present disclosure provides a vehicle.

In a first aspect, the hybrid powertrain according to the present disclosure includes: a conversion device, a first motor, and an engine. At least one of the first motor and the engine is configured to output power to a driving end through the conversion device. The engine is configured to output power to the first motor through the conversion device, to drive the first motor to generate electricity.

According to the hybrid powertrain of the present disclosure, through the cooperation of the conversion device, the first motor, and the engine, the first motor and the engine jointly output the power to a driving end through the same conversion device. This can simplify a hybrid powertrain structure, so that the hybrid powertrain is compact and an occupied volume is reduced. In addition, the vehicle can be switched to different driving modes through the switching operation of the first motor and the engine. This improves driving performance of the vehicle.

In some embodiments of the present disclosure, the conversion device includes: a first clutch assembly, a second clutch assembly, and a transmission piece. The first motor is configured to output power to the transmission piece. The first clutch assembly is connected between an engine output shaft and the transmission piece to enable the engine to selectively output power to the first motor. The second clutch assembly is connected between the transmission piece and a front differential of front axle wheels, to selectively connect the transmission piece and the front wheels.

In some embodiments of the present disclosure, the first clutch assembly includes a first engagement portion and a second engagement portion, the first engagement portion is fastened to the transmission piece, the second engagement portion is configured to be engaged with the first engagement portion, and the second engagement portion is connected to the engine output shaft.

In some embodiments of the present disclosure, the second clutch assembly includes a third engagement portion and a fourth engagement portion, the third engagement portion is fastened to the transmission piece, the fourth engagement portion is configured to be engaged with the third engagement portion, and the fourth engagement portion is connected to the front differential.

In some embodiments of the present disclosure, the first engagement portion is located on a side of the transmission piece close to the engine, and the third engagement portion is located on a side of the transmission piece away from the engine.

In some embodiments of the present disclosure, the first engagement portion, the third engagement portion, and the transmission piece are integrally formed.

In some embodiments of the present disclosure, the transmission piece includes a gear, the first motor includes a first motor gear disposed on a first motor output shaft, the first motor gear and the transmission piece form a gear pair, and the first motor and the engine are connected by the gear pair.

In some embodiments of the present disclosure, the first engagement portion is connected to the third engagement portion to form a clutch body, and the transmission piece is disposed on the clutch body.

In some embodiments of the present disclosure, the first engagement portion and the third engagement portion are integrally formed.

In some embodiments of the present disclosure, the hybrid powertrain further includes a support shaft, the transmission piece is connected to the support shaft and disposed coaxially with the support shaft, and the second engagement portion and the fourth engagement portion are rotatably sleeved on the support shaft.

In some embodiments of the present disclosure, the second engagement portion includes a chamber, and a first end of the support shaft is located in the chamber and rotatably connected to the second engagement portion.

In some embodiments of the present disclosure, the chamber includes a first limiting portion, a second limiting portion is disposed at the first end of the support shaft, and the first limiting portion and the second limiting portion limit axial movement of the support shaft.

In some embodiments of the present disclosure, the first limiting portion is a spherical groove, a center of the spherical protrusion is aligned with a center of the spherical groove, and an inner wall of the spherical groove is spaced apart from the spherical protrusion.

In some embodiments of the present disclosure, the hybrid powertrain further includes a first bearing, and the second engagement portion is rotatably connected to the support shaft through the first bearing.

In some embodiments of the present disclosure, the hybrid powertrain further includes a housing, and the second engagement portion is rotatably connected to the housing.

In some embodiments of the present disclosure, the second engagement portion and the housing are connected at a first connecting position, the second engagement portion and the support shaft are connected at a second connecting position, and in a radial direction of the support shaft, an orthographic projection of the first connecting position at least partially overlaps with an orthographic projection of the second connecting position.

In some embodiments of the present disclosure, the hybrid powertrain further includes the first bearing and a second bearing, the first bearing is disposed between the second engagement portion and the support shaft, the second bearing is sleeved on the second engagement portion, and in the radial direction of the support shaft, an orthographic projection of the second bearing at least partially overlaps an orthographic projection of the first bearing have an overlapping area.

In some embodiments of the present disclosure, the hybrid powertrain further includes a third bearing, and the fourth engagement portion is rotatably connected to the support shaft through the third bearing.

In some embodiments of the present disclosure, the hybrid powertrain further includes a housing, and a second end of the support shaft is rotatably connected to the housing.

In some embodiments of the present disclosure, the hybrid powertrain further includes a fourth bearing, and the second end of the support shaft is rotatably connected to the housing through the fourth bearing.

In some embodiments of the present disclosure, the first motor output shaft of the first motor is meshed and in transmission with the transmission piece.

In some embodiments of the present disclosure, the first motor output shaft is parallel to the output shaft of the engine.

In some embodiments of the present disclosure, the hybrid powertrain further includes: a second motor, and a transmission. The transmission is connected between the second motor and a rear differential of rear axle wheels, and the second motor outputs power to the rear wheels through the transmission.

In some embodiments of the present disclosure, the hybrid powertrain further includes: an output shaft, and the conversion device includes a first clutch plate, a second clutch plate and a clutch housing.

The engine is in transmission connection with the first clutch plate through an engine output shaft, the first motor is in transmission connection with the clutch housing through a first motor output shaft, and the output shaft is in transmission connection with the second clutch plate; and

In some embodiments of the present disclosure, the clutch housing includes a first opening and a second opening, the engine output shaft passes through the first opening and is connected to the first clutch plate, and the output shaft passes through the second opening and is connected to the second clutch plate.

The first clutch plate is correspondingly arranged with the first opening, and the second clutch plate is correspondingly arranged with the second opening.

In some embodiments of the present disclosure, the first opening and the second opening are disposed in an axial direction of the clutch housing, the first opening is disposed on a first end face of the clutch housing, and the second opening is disposed on a second end face of the clutch housing.

In some embodiments of the present disclosure, the hybrid powertrain further includes a third gear, the third gear and the clutch housing are fastened, and the first motor output shaft is connected to the third gear through a fourth gear.

In some embodiments of the present disclosure, the first motor and the engine are disposed in an axial direction of the conversion device, and the conversion device is disposed between the first motor and the engine.

In some embodiments of the present disclosure, the hybrid powertrain further includes an intermediate shaft, an input end of the intermediate shaft is connected to the output shaft, and an output end of the intermediate shaft is connected to a differential.

In some embodiments of the present disclosure, at least two driving gears are arranged on the output shaft, at least two driven gears are sleeved on the intermediate shaft, the driving gears are correspondingly arranged with the driven gears, and the intermediate shaft is in transmission connection with one of the driven gears.

In some embodiments of the present disclosure, a first driving gear and a second driving gear are arranged on the output shaft, a first driven gear and a second driven gear are arranged on the intermediate shaft, the first driving gear corresponds to the first driven gear, and the second driving gear corresponds to the second driven gear.

A synchronizer fastened to the intermediate shaft and is in transmission connection with the first driven gear or the second driven gear.

In some embodiments of the present disclosure, the first motor and the engine are disposed in the axial direction of the conversion device. The conversion device is disposed between the first motor and the engine. The first driving gear, the second driving gear, the first driven gear, and the second driven gear are disposed on a side of the conversion device away from the engine.

In a second aspect, the vehicle according to the present disclosure includes the hybrid powertrain described above.

Other aspects and advantages of the present disclosure will be given in the following description, some of which will become apparent from the following description or may be learned from practices of the present disclosure.

Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in accompanying drawings, where the same or similar elements or the elements having same or similar functions are denoted by the same or similar reference numerals throughout the description. The embodiments described below with reference to the accompanying drawings are examples and used for explaining the present disclosure, and should not be construed as a limitation on the present disclosure.

A hybrid powertrainaccording to embodiments of the present disclosure is described below with reference toto, and the hybrid powertrainmay be mounted on a vehicle.

As shown into, the hybrid powertrainof the vehicle according to embodiments of the present disclosure includes: a conversion device, a first motor, and an engine. At least one of the first motorand the engineis configured to selectively output a power to a driving end through the conversion device, and the driving end may include wheels of the vehicle. To be specific, the first motormay selectively output power to the driving end through the conversion device, the enginemay selectively output power to the driving end through the conversion device, and the first motorand the enginemay simultaneously selectively output power to the driving end through the conversion device. After the power is output to the driving end, the wheels can rotate to drive the vehicle. That the engineis configured to selectively output power to the first motorthrough the conversion device, and may also be understood as that the enginemay select to output the power to the first motorthrough the conversion deviceor may select not to output the power to the first motor. When the engineoutputs the power to the first motorthrough the conversion device, the enginecan drive the first motorto generate electricity. The first motormay be configured to selectively output power to the enginethrough the conversion device, to drive the engineto start ignition.

When the engineoutputs the power to the driving end, a rotation direction of an engine output shaftof the engineis opposite to a rotation direction of the wheels at the driving end, such that the engine output shaftand the wheels rotate to opposite directions. When the at least one of the first motorand the engineselectively outputs the power to front wheelsor rear wheelsof the driving end through the conversion device, for example, when the at least one of the first motorand the engineselectively outputs the power to the front wheelsof the driving end through the conversion device, the rotation direction of the engine output shaftof the engineis opposite to a rotation direction of the front wheels. In a rear-forward direction of the vehicle, the engineis arranged/disposed on a left side of the conversion device, and the conversion deviceis in transmission connection with a front differentialof the front wheels. The engineis arranged on the left side of the conversion device, so that the rotation direction of the engine output shaftof the engineis opposite to the rotation direction of the front wheels. Since the rotation direction of the engine output shaftof the engineis opposite to the rotation direction of the front wheels, there is no need to configure a reversing gear between the conversion deviceand the front differential, the front wheelscan be driven to rotate to drive the vehicle. In addition, the first motorand/or the enginemay be switched to selectively output the power to the driving end through the same conversion device, and the engineselectively outputs the power to the first motorthrough the conversion device, so that the vehicle can be switched to different driving modes. This can improve driving performance of the vehicle. At the same time, this can simplify a structure of the hybrid powertrain, and make the structure of the hybrid powertraincompact.

By mounting the hybrid powertrainon the vehicle, multiple functions of the vehicle can be implemented. Details are as follows.

A function of starting the engineby the first motorhaving an unloaded state: In this function, neither the first motornor the engineoutputs the power to the driving end through the conversion device, and the first motoris in a stationary state at the beginning. After the first motorreceives electric energy, the first motorstarts to run from the stationary state, and the first motortransmits the power to the engine, and drags the engineto start ignition to start the engine.

A function of starting the engineby the first motorhaving a loaded state: In this function, the first motorworks, the first motoroutputs the power to the driving end through the conversion device, the first motoris in a loaded running state, and the first motortransmits the power to the enginethrough the conversion device, and drags the engineto start ignition.